From baf3417bff7f8af61ead1bd165ac04ecfa2678d0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Fournier?= <clement.fournier@tu-dresden.de>
Date: Fri, 2 Jun 2023 15:01:52 +0200
Subject: [PATCH] Fix compilation issue with regex (illegal escape character)

---
 .../lang/apex/rule/bestpractices/UnusedLocalVariableRule.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/UnusedLocalVariableRule.java b/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/UnusedLocalVariableRule.java
index c125368d28..cdb59a31e0 100644
--- a/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/UnusedLocalVariableRule.java
+++ b/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/UnusedLocalVariableRule.java
@@ -34,7 +34,7 @@ public class UnusedLocalVariableRule extends AbstractApexRule {
             "Database.countQuery".toLowerCase(Locale.ROOT)
     ));
 
-    private static final Pattern BINDING_VARIABLE = Pattern.compile("(?i):(?:\s|)([_a-z0-9]+)");
+    private static final Pattern BINDING_VARIABLE = Pattern.compile("(?i):\\s*+([_a-z0-9]+)");
 
     @Override
     protected @NonNull RuleTargetSelector buildTargetSelector() {